Reference: Mourning Customs
Hastings
The Oriental expression of grief has a twofold relationship. Towards God it is marked by silent and reverent submission symbolized by placing the hand on the mouth. 'The Lord gave and the Lord hath taken away' (Job 1:21); 'I was dumb
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Moreover, when ye fast, be not as the hypocrites of a sad countenance; for they disfigure their faces, that they may appear unto men to fast: verily I say unto you, they have their reward. But thou when thou fastest, anoint thy head, and wash thy face. read more. That thou appear not unto men to fast, but to thy Father who is in secret, and thy Father who seeth in secret shall reward thee openly.
And he cometh to the house of the ruler of the synagogue, and seeth a tumult, and them that wept and wailed greatly.
Rejoice with them that rejoice, and weep with them that weep.
Wherefore comfort one another with these words.
For the Lamb who is in the midst of the throne will feed them, and will lead them to living fountains of water: and God will wipe away all tears from their eyes.